/*
 *
 * (c) Copyright Ascensio System Limited 2010-2023
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
*/


namespace ASC.Api.Utils
{
    public static class Update
    {
        public static T IfNotEquals<T>(T current, T @new)
        {
            if (!Equals(current, @new))
            {
                current = @new;
                return @new;
            }
            return current;
        }

        public static T IfNotEmptyAndNotEquals<T>(T current, T @new)
        {
            if (Equals(@new, default(T))) return current;

            if (!Equals(current, @new))
            {
                current = @new;
                return @new;
            }
            return current;
        }

        public static T IfNotEquals<T>(T current, T @new, ref bool hasChanges)
        {
            if (!Equals(current, @new))
            {
                current = @new;
                hasChanges = true;
                return @new;
            }
            return current;
        }

        public static T IfNotEmptyAndNotEquals<T>(T current, T @new, ref bool hasChanges)
        {
            if (Equals(@new, default(T))) return current;

            if (!Equals(current, @new))
            {
                current = @new;
                hasChanges = true;
                return @new;
            }
            return current;
        }
    }
}